121154166 has 36 divisors (see below), whose sum is σ = 305360172. Its totient is φ = 34615224.

The previous prime is 121154161. The next prime is 121154167. The reversal of 121154166 is 661451121.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121154161) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 67800 + ... + 69563.

It is an arithmetic number, because the mean of its divisors is an integer number (8482227).

Almost surely, 2^121154166 is an apocalyptic number.

121154166 is an abundant number, since it is smaller than the sum of its proper divisors (184206006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121154166 is a wasteful number, since it uses less digits than its factorization.

121154166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137385 (or 137375 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 121154166 is about 11007.0053147984. The cubic root of 121154166 is about 494.8187153729.

The spelling of 121154166 in words is "one hundred twenty-one million, one hundred fifty-four thousand, one hundred sixty-six".